I’m pretty sure it would be B
The answer to your question is false, boiling happens below the surface of a substance.
Yes, Ionic bonds do not share electrons. Polar covalent bonds share electrons they just share them unevenly due to the polarity.
What is does that mean 0.0023 cooooo
There is no reaction because of the common ion effect(which in this case is K)if there were a reaction the products would be the same as the reactants so no reaction happens